RC-20 Retro ColorRC 20: Your Sound. In Color. Quickly add character and analog warmth to any track or mix RC 20 Retro Color is a creative effect plugin that easily recreates the warm feeling of vintage recording equipment. It adds life and texture to any recording, and also works perfectly in any modern production setting. RC 20 Retro Color's 6 effect modules work great on their own or together Noise Generator Add life and texture with one of RC 20's many noise types,